alternaterows隔行alternatev.交替；轮流adj.间隔的；轮流的；交替的n.代替者；供替代的选择Alternate wet and dry test交替乾湿试验alternate library facility更替程序库功能alternate inversion signal交替传号反转信号Alternate Command Facility预备指挥设施Alternate Storage Location预备储存地点alternate bending strength交变弯曲强度alternate operation column轮换操作塔Alternate Alerting Network备用警戒网alternate entry and return交替进入和返回alternate bay construction隔仓施工法